"Johnson" for a boys first name

My husband and I have been trying to come up with a boys name. We both want some of our families to be incorporated in our children's names. For his side, Johnson is the family name he wants to use. On my side, Davis is the name I want to use. So we thought about naming a boy JohnsonDavis. We like it but we don't absolutely love it yet. There could even be the nickname "Jack" or "John." What do you think?

I think Davis works better as a first name. Also, Johnson is a slang term for a man's.. errr.. you know. That is really something to consider, it would be really hard to have a name that refers to the nether regions!

I think Davis works better as a first name. Also, Johnson is a slang term for a man's.. errr.. you know. That is really something to consider, it would be really hard to have a name that refers to the nether regions!

This is the first thing I thought of when I heard Johnson as a boy's name too. I wouldn't use it in the first name spot. Davis, I like. What about DavisJohn?